• WordNet 3.6
    • n physa any member of the genus Physa
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Webster's Revised Unabridged Dictionary
    • n Physa (Zoöl) A genus of fresh-water Pulmonifera, having reversed spiral shells. See Pond snail, under Pond.
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Century Dictionary and Cyclopedia
    • n physa A large genus of pond-snails or fresh-water gastropods of the family Limnæidæ, or made type of the Physidæ, having the shell sinistral. There are many species, found on aquatic plants in ponds, as P. fontinalis of Europe and P. heterostropha of America. The genus was named by Draparnaud in 1801.
    • n physa [lowercase] A pond-snail of the genus Physa.
    • n physa [lowercase; pl. physæ (-sē).] In some anthozoans, as Edwardsia, the lower end of the body. It may or may not be retractile into the scapus. Compare capitulum, 6, and scapus, 6.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. a bellows


In literature:

Physa newcombi, Adams & Angas.
"Explorations in Australia, The Journals of John McDouall Stuart" by John McDouall Stuart
Cap, capitulum; sc, scapus; ph, physa.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2" by Various
Among the univalves, lymnea, physae, planorbis, and paludina, are the most useful and ornamental.
"The Book of the Aquarium and Water Cabinet" by Shirley Hibberd
The sub-family Physa has two genera, Aplecta and Physa.
"Our British Snails" by John William Horsley